This two-part article discusses the following topics:
* basic understanding of the structure of an I/O block in any digital device
* different specifications of pin, which need to be understood, while selecting the device for application
* different variants of configurations of I/O block which need to be used for different application requirements
* choosing the particular configuration that will achieve both reduced BOM cost and improved system performance
Read part one - The building blocks
Read part two - Hot swap and other implementation issues
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